The LG INR18650MJ1 3500 mAh is a really new 18650 battery cell that can handle fairly high drain applications (10A) while offering a massive 3500mAh. It's one of the best batteries we offer for high discharge flashlights or other devices that need a high capacity but medium discharge protected battery. The protected NCR18650GA is its only real competitor and is a good alternate choice as well.

These are manufacturered with a very high quality PCB including a Japanese Ricoh protection IC with three FNK MOSFETs for 20A high current cutoff (most PCBs will not be able to handle this much current). This protection circuit protects the battery from mishandling, overcharge, or overdischarge while allowing the battery to do its job properly.

The cell is made by LG Chem in Korea. Our company then adds the high quality PCB along with the button top in an ISO certified factory to all safety standards. A black wrap is put over the top to hold it together.

Please note that these batteries do have a UN38.3 test report available and are legal for shipping. Many protected batteries on the market actually do not have any test data and are likely illegal for shipping due to lack of UN38.3 test report. Many competitors don't realize that a separate test needs to be done on the battery assembly and that the cell test is not enough. All of our batteries include a UN38.3 report available upon request.

These protected MJ1 batteries actually go a few steps further and are actually IEC62133 tested protected batteries and have a CB certificate which will allow easy certifications in almost any country. IEC 62133 and CB Scheme test reports and paperwork are available upon request.

If your battery is damaged or defective on arrival (will not take its first charge, or has issues with its first cycle), please let us know within 14 days of receiving your order and we'll make it right. Please read our complete store policy on defective products here for more information and to see if you're eligible.

Battery Warning

Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.

All rechargeable batteries have inherent risks under any circumstance. Use caution with working with li-ion batteries (lithium-ion), LiPo (lithium ion polymer), and any rechargeable cells (together "rechargeable batteries"), as they have dangerous charging characteristics and are known to explode or burn if mishandled. A purchaser and user of rechargeable batteries should educate themselves on rechargeable batteries, especially as to charging, discharging, assembly, and storage. Learn more about proper storage and care for rechargeable batteries here. We are not responsible for any damage caused by the misuse or mishandling of rechargeable batteries.

Properly dispose of all battery cells and chargers in accordance with local laws and mandates (if you're unsure, contact your local municipality)

If a rechargeable battery overheats, hisses, or bulges, immediately quarantine the battery from any combustible materials - ideally, take the battery outside

If a rechargeable battery catches fire, the FAA recommends pouring water or soda on the battery and surrounding areas - ideally, use a foam extinguisher to quell the fire

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the best batteries

What device/application do you use this with?Exclusively for headlamps for night hunting.

18650 Batteries

Love the fast shipping, battery life and voltage, but the battery logo wraps are not very uniform. Meaning, some have a slight overlap and the added thickness makes it a tight fit in my headlamps( Boruit RJ3001 is my favorite for frog gigging).

Excellent so far - Prompt shipping and good product

I ordered 4x of this 18650 battery, all arrived quickly as expected. Came with 2 free cases and a 'free gift' since it shipped USPS - my gift was a decent cheap LED flashlight that looks like it can use 18650 or 26650.
I tested two of them side-by-side in identical 800 lumen flashlights (~2A draw on a fresh battery). Both ran about 20 minutes longer than my next best used battery (97 min vs 78 min). Not a scientific capacity measurement, but a promising result.